role vs baddie

role and baddie both are nouns.

Word	Noun	Adjective	Verb	Adverb
role	Yes	No	No	No
baddie	Yes	No	No	No

As nouns, baddie is a hyponym of role; that is, baddie is a word with a more specific, narrower meaning than role:

Other hyponyms of role include bit part, minor role, heavy, hero, ingenue, name part, title role, heroine, villain.

role (noun)	baddie (noun)
the actions and activities assigned to or required or expected of a person or group	the principal bad character in a film or work of fiction
normal or customary activity of a person in a particular social setting
what something is used for
an actor's portrayal of someone in a play